package com.cst.words.Interceptor;

import com.alibaba.fastjson.JSONObject;
import com.cst.words.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author : CST
 */
@Component
@Slf4j
public class LoginCheckInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("preHandle执行");

        String url = request.getRequestURL().toString();
        log.info("url:"+url);

        if (url.contains("/wx/login")){
            log.info("登录放行");
            return true;
        }
        String jwt = request.getHeader("token");

        if (!StringUtils.hasLength(jwt)){
            log.info("token为空,未登录");
            R<String> error = R.error("NOT_LOGIN");
            String notLogin = JSONObject.toJSONString(error);
            response.getWriter().write(notLogin);
            return false;
        }

        log.info("令牌合法，放行");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("postHandle执行");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("afterCompletion执行");
    }
}
